Registers fo s gbding machines



Feb. 19, 1963 s. L. ALMVIDE 3,078,038 REGISTERS FOR ADDING MACHINES,BOOK-KEEPING MACHINES AND our 7 HER CALCULATING MACHINES Filed April 3,1961 3 Sheets-Sheet l FIG.1 18 1.19

14770/P/l/EKF Feb. 19, 1963 s. L. ALMVIDE 3,078,038

REGISTERS FOR ADDING MACHINES, BOOK-KEEPING MACHINES AND OTHER"CALCULATING MACHINES 5 Sheets-Sheet 2 Filed April 5, 1961 Feb. 19, 1963s. L. ALMVIDE 3,078,033

REGISTERS FOR ADDING MACHINES, BOOK-KEEPING MACHINES AND OTHERCALCULATING MACHINES 3 Sheets-Sheet 3 Filed April 3, 1961 United StatesPatent Office Patented Feb. 19, 1363 3,fl78,3$ REQESTERS FUR ADEMNGlidAQHiNEE, B68 3 KEEPENG Mr'tiQi-HNES AND @THER CALQU- LATENG MAQHTNESSven Leonold Almvide, Gotebcrg. dweden, assignor to AktieholagetUriginai-Qdhner, Goteborg, weden, a ieinbstoch company of weden FiledApr. 3, 1961, dcr. No. 1%,194 (Iiairns priority, anpiication Sweden Apr.6, 196% 2 Claims. (Cl. 235-137) This invention relates to a completeregister for adding machines, writing calculating machines and the like,which operates below as well as above zero and which is formed as astandardized unit comprising all means for independent calculations andadapted to be easily connected to the present control members inconventional adding, bookkeeping and other calculating machines withoutthe need for substantial modifications of the latter.

' It is an object of the present invention to provide a register of thekind referred to above which is assembled of simple parts having smalldimensions, small inertia and short and simple control movements, tooperate swiftly and reliably.

It is another object of the invention to provide a register unit whichmay be readily dismounted for inspection, adjustment and cleaning.

It is a still further object to provide a register unit having smalloverall dimensions which may be easily incorporated in office machineshaving agreeable lines and an anatomically sound shape.

With these and other objects in view, in a register for office machinesof the kind referred to which comprises a plurality of calculatingwheels having each ten teeth, said wheels being disposed on a commonshaft, said shaft being pivotally supported to enable said tooth wheelsto be swung into and out of engagement with two interior tooth rowsprovided on a plurality of rack members the number of which correspondsto the number of tooth wheels, each of said wheels having a transfertooth adapted to engage and actuate a transfer pawl, said pawl adaptedto actuate, in its turn, a stop latch which forms in those decadeswherein no tens transfer shall take place, an abutment for said rackmembers in their zero position when they are returned to non-actuatedposition by drive means such as a main shaft, but which are actuated toassume a non-latching position in those decades in which a transfershall take place and which permit that the corresponding rack membermoves another step (below zero) so that the corresponding calculatingwheel is rotated one step by the rack member and consequently receives atens transfer increment, the stop latches and a register bail structureare pivotally mounted on a common shaft, said bail structure comprisingthe shaft with the register wheels as well as the transfer pawls andalignment means for the register wheels, those members thus alwaystaking up the same position relative to each other and to the stoplatches when engaging and disengaging said rack members, to eliminatestop and adjustment positions.

A preferred embodiment of a register unit according to the inventionwill now be described, reference being had to the appended drawings.

In the drawings FIG. 1 is a side elevation of-a register unit with anend wall removed,

FIG. 2 is a view showing certain parts illustrated in FIG. 1 in twodifferent positions,

FIG. 3 is a plan view of a stop latch and members cooperating therewith,

FIG. 4 is a side elevation view of the register unit from the outside,

FIGS. 5 and 6 are side elevation views of the register with differentparts removed for clarity, and

FIG. 7 is an exploded diagrammatical/ perspective view of the registerunit which shows particularly the credit balance device.

The embodiment illustrated in the drawings comprises a register formedas a cassette-shaped unit with a plurality of rack members 1 arranged ina manner known per se and with register wheels 2 disposed betweentoothed portions 1a and 1b of the rack members. The rack members areguided laterally in a known manner by slots in a guide member 29 (FIG.1). Other guide means for the rack members comprise two guide plates 30and two guide shafts 31 (FIGS. 1 and 4).

The register wheels 2 are journalled on a common shaft 12 which issupported in a pair of arms 13 pivoted on a main shaft 4.

The arms 13 and shaft 12 form together a bail member which is pivotedround the shaft 4 and which mounts the alignment means and tens transfermeans 21, 22 for the register wheels 2, said means together with stoplatches 3 thus being pivotally mounted on main shaft 4.

The alignment means or bar 21 extends through the whole of the registerand is supported at its ends by alignment arms 22 which are pivoted onstuds 25 in the arms 13. The alignment arms 22 engage by their outerends stud members 23 and 24 fast in the end wall which limit themovements of the arms 22 when the bar 21 is engaged or disengaged withthe wheels 2. A spring member 26 urges the bar 21 into locking positionwhen the bail 4, 12, 13 takes up its middle position (FIG. 1).

The bail structure 4, 12, 13 and the alignment mechanism 21, 22 areactuated into engagement and disengagement between the register wheels 2and the rack members 1 by cam members 27 at both sides of the registerunit, and those cams are rigidly connected by means of a shaft 28journalled in the end walls (not illustrated).

The cams are actuated, in turn, by members, known per se, which aredriven from the main shaft 4.

The shape of the bail is such that all movable members in the tenstransfer mechanism when engaging with and disengaging from the rackmembers always take up the same position relative to each other and tothe register wheels 2. The alignment mechanism further is designed insuch a way that it follows the engagement and disengagement motionpositively which makes it possible for the register to operate very fastand prevents the transfer pawls 5 (FIG. 2) to be swung out by a possiblerotation of the register wheels 2. The stop latches 3 are shaped in suchmanner and move in such a direction that they push the rack members 1before themselves upon clearing, to avoid blocking.

As can be seen from FIG. 1 the rack members 1 are moved (downwards inFIG. 7) by setting members 14 (FIG. 4) which move the rack members tothe right by the action of spring means 15 (FIG. 7).

During the ensuing operation cycle the rack members 1 are urged back bymotor-driven hook means which engage studs 1d at the rack members 1(FIGS. 1, 4 and 7). The rack members 1 are normally stopped by anabutment 7 on a stop latch 3,

if a register wheel 2 has rotated more than one revolution, a tenstransfer shall take place. The transfer tooth 6 of the wheel 2 then hasactuated the transfer pawl 5 in the next decade which pivots on a stud17, so that the transfer pawl is moved out of engagement with the stoplatch 3. The latter thus is urged to turn on the shaft 4 by the actionof a tension spring 18 (FIGS. 1, 3 and 7).

A clearing bar 19 stops the latch 3 in a position wherein aevs sa thestud 7 permits the rack member 1 to move one step backwards (below zero)upon the clearing of the rack members 1. The latter and consequently theregister wheel 2 of the corresponding decade thus receives an incrementof one unit, and the transfer is complete.

Clearing is effected when the clearing bar 19 is rotated clockwise bymeans of the crank '20 (FIG. 7) in a known manner. Said barll? actuatesthe latches 3 which are returned so far'that'the transfer pawl 5 resumesits looking engagement and all rack-members 1 are moved by the studs 7one step backwards, if a transfer'h-as been effected. The clearing isterminated thereby.

Known registers of this type have been provided with transfer means suchthat a transfer pawl has been actuated by the transfer tooth andreleased a'corresponding stop latch from engagement with the rackmembers, said stop latch'moving essentially perpendicularly'to the rackmember movement direction. At the subsequent cleari'ng'the rack memberstherefore must be returned in a first step to make it possible to returnthe stop latches to their non-actuated positions,'and not until then thetransfer pawls have returned.

By the present invention the advantage is' attained, as alreadymentioned, that the rack members l are returned in the same operation asthe one which normalizes the stop la'tch 3 and transfer. pawl 5, andthat makes for a gain of time for each returning operation which meansthat the register may operate with greater speed and which isparticularly important when totalizing is effected. The security isbetter than-with earlier designs, due to the positive actuation.

The'gain of time'is made possible by the underlying principle ofoperation which is that the direction of the stop latch movementscoincides wholly or partly with the direction 'of travel of the rackmembers 1. To this end it also'helps that the alignment means follow theengagement and disengagement movements of the register wheels.

"Also the transfer of the fugitive one may be said to take 'place in onesingle operation instead of, as in the earlier mechanisms, in-severalcomplex operations.

The credit balance mechanism comprises the following parts (FIG. 7).

The register wheel 2. in the highest decade actuates in a usual manner atransfer pawl 5 and a stop latch which in this instance is called acredit pawl 8. This pawl is connected overa credit balance bail 9 to asimilar stop' latch (credit pawl 16) fora credit balance rack member lllwhich is disposed before the first rack member proper of the register.

The credit balance rack is connected to the rack mem-' ber of the firstdecade in such a manner that, when the credit balance rack 11 is moved astep below zero as a consequence of a transfer from the' highest decadeof the register, the first rack member 1 is carried along by the creditbalance rack 11. The credit wheel (first wheel) lacks the correspondingtransfer pawl and actuates upon turning one step a balance latch 32pivoted to the arm 13. A stud member '33 on the balance latch 32moves'in a slot in the arm 13 and actuates, in a manner known per se,-the engagement means in the machine.

The number transferred from the highest decade, the

fugitive one thus is entered directly in the first decade of theregister without an intermediate operation.

An advantage with this design is that the transfer of the fugitive onewill take place in one single operation instead of, as by knownmechanisms, in several complex operations.

Also when clearing time is gained, since by the invention the rackmembers 1 and the stop latches 3 return simultaneously while, in oldermechanism, the rack members must be returned in a first operation beforethe stop latches may be moved into engagement.

What I claim-is: I

1. A register for calculating machines, such as adding machines and thelike, of the kind comprising a plurality of calculating wheels havingeach ten teeth, said wheels being disposed on' aco-mm'on shaft, saidcommon 'sh'aft being pivot'ally supported to enable said tooth wheels tobe swung into and out 'of engagement with two interior tooth rowsprovided on a plurality of rack members the number of which correspondsto the number of tooth wheels, each of said wheels having a transfertooth adapted to engage and actuate a transferpawl, 'said'p'awl adaptedto actuate, in its turn, a stop latch'which forms in those decadeswherein no tens transfer shall take place, an abutment for said rackmembers in'the'ir zero position when they are returned to non-actuatedposition by drive means suchas a main shaft, but which are actuated toassume anon-latching position in those decades in which a transfer takesplace and which permit the corresponding rackrnember to move anotherstep (below zero) soth'at the corresponding calculating wheel is rotatedone step by the rack member and consequently receives a tenstransferin'crem'ent, the improvement comprising pivotally mounting thestop latches and a register bail structure on a second common shaft,said bail structurecomprising said first common shaft withsaid'ca'lculating wheels 'as well as said transfer pawls" and alignmentmeans for the calculating wheelswhereby said wheels, transfer. pawls andalignment 'means'always' take up the same position relative ;toeach"other and to the stop latches'whenengaging and-disengaging said rackmembers, thereby eliminatingany stop and adjustment positions.

' 2. A register as claimed in'claim l'wh'erein a transfer pawl and astop' latch are mounted adjacent to and operated by the calculatingwheel in'the highest decade and wherein said stoplatch isconnected bya-bail to asimilar credit pawl stop latch, a credit balance rack'memberlocated adjacent the first rack member proper of the register,'saidbail' operated'credit pawl controlling said credit balance rack,"said credit balance rack being connected to the first rack member tomove said first rack member to'directly enter a fugitiveone in the firstdecade of the register, a credit balance wheel having calculating teethbut without transfer teeth, and a balance latch shifted by said creditpawl'to position to pre'vent further tens' transfer in the first decade'until the 'regis'ter passes-thr'ough zero in the opposite direction.

References I Cited in the file of this patent UNITED STATES'PATENTS2,646,928 Parker July 28, 1953

1. A REGISTER FOR CALCULATING MACHINES, SUCH AS ADDING MACHINES AND THELIKE, OF THE KIND COMPRISING A PLURALITY OF CALCULATING WHEELS HAVINGEACH TEN TEETH, SAID WHEELS BEING DISPOSED ON A COMMON SHAFT, SAIDCOMMON SHAFT BEING PIVOTALLY SUPPORTED TO ENABLE SAID TOOTH WHEELS TO BESWUNG INTO AND OUT OF ENGAGEMENT WITH TWO INTERIOR TOOTH ROWS PROVIDEDON A PLURALITY OF RACK MEMBERS THE NUMBER OF WHICH CORRESPONDS TO THENUMBER OF TOOTH WHEELS, EACH OF SAID WHEELS HAVING A TRANSFER TOOTHADAPTED TO ENGAGE AND ACTUATE A TRANSFER PAWL, SAID PAWL ADAPTED TOACTUATE, IN ITS TURN, A STOP LATCH WHICH FORMS IN THOSE DECADES WHEREINNO TENS TRANSFER SHALL TAKE PLACE, AN ABUTMENT FOR SAID RACK MEMBERS INTHEIR ZERO POSITION WHEN THEY ARE RETURNED TO NON-ACTUATED POSITION BYDRIVE MEANS SUCH AS A MAIN SHAFT, BUT WHICH ARE ACTUATED TO ASSUME ANON-LATCHING POSITION IN THOSE DECADES IN WHICH A TRANSFER TAKES PLACEAND WHICH PERMIT THE CORRESPONDING RACK MEMBER TO MOVE ANOTHER STEP(BELOW ZERO) SO THAT THE CORRESPONDING CALCULATING WHEEL IS ROTATED ONESTEP BY THE RACK MEMBER AND CONSEQUENTLY RECEIVES A TENS TRANSFERINCREMENT, THE IMPROVEMENT COMPRISING PIVOTALLY MOUNTING THE STOPLATCHES AND A REGISTER BAIL STRUCTURE ON A SECOND COMMON SHAFT, SAIDBAIL STRUCTURE COMPRISING SAID FIRST COMMON SHAFT WITH SAID CALCULATINGWHEELS AS WELL AS SAID TRANSFER PAWLS AND ALIGNMENT MEANS FOR THECALCULATING WHEELS WHEREBY SAID WHEELS, TRANSFER PAWLS AND ALIGNMENTMEANS ALWAYS TAKE UP THE SAME POSITION RELATIVE TO EACH OTHER AND TO THESTOP LATCHES WHEN ENGAGING AND DISENGAGING SAID RACK MEMBERS, THEREBYELIMINATING ANY STOP AND ADJUSTMENT POSITIONS.